Allied & ICAR Exam Bank • ALLIED_1820 MCQ • 2 Marks

Section 8: General Aptitude

Analytical & Spatial Aptitude

Subtopic: Spatial Reasoning & 3D Representations

Question Statement:

In a corner cube retroreflector consisting of three mutually perpendicular flat mirrors, how is an incoming ray of light reflected?

Options:

  • (A) Parallel to the incident direction, regardless of the angle of entry
  • (B) At 90 degrees to the incident direction
  • (C) Diffused in all directions
  • (D) Absorbed completely

Answer Key:

A

Step-by-Step Solution & Explanation

A corner-cube retroreflector reflects incoming light rays back along their exact original path (anti-parallel) due to three successive 90-degree planar reflections.
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